The MDAnalysisData.yiip_equilibrium module contains a
9-ns equilibrium MD trajectory and a 90-ns equilibrium MD
trajectory of a membrane-protein system. It can be used to
study membrane-protein dynamics.

Molecular dynamics (MD) trajectory files of the YiiP membrane protein in
a POPE:POPG 4:1 model membrane. The equilibrium simulation was performed
in the NPT ensemble at T=300K and P=1 bar. The system was simulated with
Gromacs 2018.1, using the CHARMM36 force field, the TIP3P explicit water
model, NaCl at approximately 100 mM concentration, and Zinc ions.

Trajectory frames were saved every 100 ps for a total of 9 ns and 90 ns
simulated time. The topology contains the whole system (protein, membrane,
water and ions).

The topology is contained in the YiiP_system.pdb file. The 9-ns trajectory
is contained in the YiiP_system_9ns_center.xtc file. The 90-ns trajectory
is contained in the YiiP_system_90ns_center.xtc file.

data_home (optional, default: None) – Specify another download and cache folder for the datasets. By default
all MDAnalysisData data is stored in ‘~/MDAnalysis_data’ subfolders.
This dataset is stored in <data_home>/yiip_equilibrium.

download_if_missing (optional, default=True) – If False, raise a IOError if the data is not locally available
instead of trying to download the data from the source site.

data_home (optional, default: None) – Specify another download and cache folder for the datasets. By default
all MDAnalysisData data is stored in ‘~/MDAnalysis_data’ subfolders.
This dataset is stored in <data_home>/yiip_equilibrium.

download_if_missing (optional, default=True) – If False, raise a IOError if the data is not locally available
instead of trying to download the data from the source site.